Re: Why are Island Arcs arced?

On Jan 4, 7:08 pm, auxotectonics_deletethis@xxxxxxxxxxxxxxxxxx
(Florian) wrote:
brad <lbjohnson1...@xxxxxxxxx> wrote:
On Jan 1, 4:20 pm, auxotectonics_deletethis@xxxxxxxxxxxxxxxxxx
(Florian) wrote:
There is only surfaceward migration of material. The expression of that
migration depend on the nature of the migrating material and the nature
of the crust above it.

Your paradigm requires that new matter appear inside the Earth . The
Earth's
shape is spherical with a slight  eqatorial bulge and slight
flattening at the
S. Pole due to Antarctica . This is strong evidence that any new
matter
appearing inside the planet is arranged symetrically or occurs at one
point
most optimal for its creation .

Whatever. Bulging results from rotation.

BEEP...incomplete .. Show something and respond in some way
to indicate working brain cells .

At least, the preview can give you some clues.

I'll say this again.

Dude, you get educated first by reading some parts of the book.

You introduce something that resembles more of an engineering
problem and then ask me to read a book on questionable Geology ?

I suggest you to get an education, you refuse. Your call.

You call that ... "an education" ? I'd sooner mop floors ! At least
I'd be useful .



If extra mass extrudes from one area ( say the
W Pacific ) then a self gravitating body ( say the Earth ) will
automatically adjust to this new *out-of-round* shape and become
spherical again .

It is a continuous process. There is a very good example of that process
with the sumatra earthquake, even the axis of rotation changed a bit in
response to the extrusion.

In response to the mass of water displaced !

LOL! Good one! but nope.

LOL... BEEP... Wrong... !!!!

That readjustment will negate upducking before it occurs .

Nope, because the whole thing is driven by internal pressure building up

From a point in gravitational  equilibrium with the rest of the
planet !

Irrelevant, the internal stress counters the gravitation force.

You miss the point . In your *paradigm* influx of new matter must
occur
somewhere internally . ( as it is not noticed everywhere ) So , that
implies
a *special* set of constraints that must exist where new matter
appears .
Since the planet does not seek a new rotational center that implies
balanced
formation of new matter at some point in gravitational equilibrium
inside the planet.
Why is expansion asymmetric ? There is no symmetry with EE. It is an
*ugly*
paradigm .

and being liberated as material migrates toward the surface and spread.

And should be symmetrically liberated !

Refuted by observation.

Only if you believe in *upduckshun* !

Growth is more important in the southern
hemisphere as illustrated by the spreading rates of major ridges:

You cite todays rates as if they always existed . If that were the
case
all ridges would center on their basins and that , certainly , is not
the case.

Try filling some cream puff if you can't get it.

I've never seen a Spherical creampuff , either .Or that rotated and
existed
within its own gravitational well !

Fill it. What happen if you keep filling it? is it growing? does some
cream find its way out of the crust? does it overthrust some crust?

Fill one in outer space . How does the surface respond without
gravity to weaken some point and allow seepage ? The Earth is in its
own gravity well . Your pastry analogy is inadequate !

Brad
.

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